review

The Z 6 is the Best Camera for Night Photography

Let’s not bury the lead. The Nikon Z 6 is the best camera for night photography.

Bold statement, I know. We live in a golden age for night photography, when there aren’t many “bad cameras” for photographing in low-light scenarios. Last December I tested the current batch of full-frame mirrorless cameras for a night photography series produced by B&H Photo. All three cameras I tested—the Canon EOS R, Nikon Z 6 and Sony a7R III—performed admirably. In fact, none of them would hold me back from producing excellent work during the day or night.

At that time I was “dating” a lot of camera systems. I really liked the Fuji X series because of the smaller bodies and lenses. But I was noticing a granular quality to my higher-ISO images that was troublesome for me. My maximum usable ISO for dark sky work with the X system was 6400, which worked most of the time.

The other camera in my bag is the Nikon D750. This is one of my all-time favorite night cameras. The colors and sharpness perfectly match my work. Yes, it is a 5-year-old camera, but guess what? It has damn good image quality and is a full-frame camera that costs $1,099 refurbished or $1,496 with a free year of Adobe’s Photography Plan. It’s hard to disregard that, even if it is a second camera.

Still, the more I have used the Z 6, the more I like it—enough so that I felt compelled to call it the best for the type of work I do, and to write down why.

What I like in a Night Camera

Before we get into exactly what I love about the Z 6 in particular, let’s go over what I look for and recommend in a night camera in general.

A lot of cameras are good—heck, these days a lot of cameras are great! I know this first-hand, because while working at B&H I’ve been lucky enough to try a wide variety of what’s on the market. But it takes a special set of features for a camera to be great at night photography. Below I’ll run through what I believe those features to be, and then I’ll go over how the Z 6 checks (or, in some respects, doesn’t check) those boxes.

It has to fit just right

When standing at the edge, be comfortable with your gear.

First off, choosing the right camera is like shopping for shoes. Style points count, but the bottom line is it has to fit you and your needs. It has to be ergonomic to hold and be an extension of your eye, heart and hand. The camera, as well as the many buttons that decorate it, has to be “one with you” and not get in your way of seeing and creating.

Every camera has a learning curve, but if after a month of heavy use you are still struggling with what the buttons do, or if you feel uncomfortable with it, then it is not the best camera for you.

High ISOs are a must

Capable high ISOs are the next big factor. You need to like the image quality at 6400—otherwise, you will not be shooting the Milky Way. If you can get to ISO 12,800 or 25,600 comfortably, that’s even better.

Almost every camera from the last 3 years can get to ISO 6400 without the image being too grainy or noisy. Almost every camera also has ISO settings above 6400, but very few have good image quality beyond that point. (We’re not going to get into image quality charts and the like, but a little later in this post I will share real-world night photos and we will compare ISOs between competing cameras.)

The Nikon Z 6 at ISOs 12,800, 25,600 and 51,200.

Testing high ISOs is very subjective. You and I could own the same camera and I could love it at 12,800 with some gentle noise reduction in post, while you could absolutely hate the same. We all have different thresholds. Get to know and understand yours.

Test your camera at 6400, 12,800, 25,600, and all the stops in between. Bring the images into Lightroom and zoom to 100 percent, and drag the Luminance slider to see how it balances removing noise versus losing detail. If you are seeing color in that high ISO noise—splotches of red, green and blue—then push the color slider to the right until it is removed. You can be more aggressive with the color noise slider as there is no loss of image detail, even at 100 percent.

How well can the camera see in the Dark?

One of the biggest frustrations with dark-sky night photography is that it’s hard to see anything through the viewfinder, EVF or LCD screen. DSLRs have a slight edge here. When you turn on a DSLR, the meter information inside the viewfinder is actually pretty bright and makes it hard to look through. However, you can adapt in two ways, both of which are excellent solutions for composing in the dark:

  1. If you turn off the camera and look through the optical viewfinder without all the internal lights, then you can see pretty well.

  2. A little trick Chris Nicholson taught me (which Lance Keimig taught him) is to shine a flashlight through the back of the optical viewfinder and the light coming out of the other end (i.e., the lens) will shine onto the scene in front of you illuminate exactly what is in the frame.

But you can do those things only with a DSLR. For a mirrorless camera, seeing in the dark is a struggle. For the most part, the EVF or LCD screen can’t “gain up” for us to see anything. So we have to take multiple high ISO test shots just to “see” what is in the frame.

(However, in one of Sony’s latest firmware upgrades they introduced Bright Monitoring in their A7 and 6000 cameras. This is a game-changing feature for night photographers—but it could also use some further tweaking. It does very well in most rural dark scenarios but in really dark-sky scenes like Bortle 1 or 2 with no moon, you will still see very little.)

What lenses can you use?

A wide and fast lens is mandatory for any sort of astro-landscape photography—so the camera needs to be able to accommodate.

Our favorite night lens is the Irix 15mm f/2.4. It is an inexpensive, manual focus lens that has a click stop at infinity, and infinity is accurate. The lens comes in three mounts: Nikon F, Canon EF and Pentax. I have used adapters to mount the Irix on Fuji, Nikon Z and Sony without any issues, but rumors are swirling that Irix is working on mounts for Sony E, Nikon Z and Canon EOS R.

That being said, it is good to have a little variety in your lens choice. Wide fast zooms such as a 14-24mm f/2.8 or 16-35mm f/2.8 are great. A sharp 24-70mm f/2.8 would be my third choice.

That combo would fulfill most of my visionary needs on any given night, but unique lenses and fast primes that match the way I see can be inspiring. A wide tilt-shift lens, or a fisheye/superwide zoom such as the Nikon 8-15mm or Canon 11-24mm f/4, can add an extra oomph to compositions. I’m also a sucker for the Zeiss Batis lenses for Sony and Zeiss’ standard razor-sharp manual focus lenses.

Why I Love the Z 6

OK, it wasn’t love at first sight. But as a Nikon user, I was pretty excited to test the Z 6 and its rumored high ISO capabilities. Then my initial tests blew me away, so I purchased one last January.

We’ve had way more ups than downs, and we’ve been living together nicely for the last 9 months. I’m still waiting for the “perfect” Nikon Z lens (more on that later), but while waiting I’ve noticed that some of my favorite photos I’ve made this year have been with my Z 6. Below is the breakdown of our “relationship.”

Comfort

It is a super-comfortable camera for me. The grip fits nicely in my hand. I really like the thumb rest on the back of the camera, as it helps with the overall balance. The camera is light for a full-frame mirrorless, and is easy to carry on your shoulder for long periods of time.

Controls

The menu system follows the same logic as its DSLR predecessors, so as someone who has used Nikon for years, this camera was a cinch for me to pick up and start shooting. The buttons are easy to navigate and use. I also like the touch screen for zooming and swiping through images. (However, I do not like the touch screen for triggering the camera.)

I’m a big fan of the LED top screen that gives me all the information I need to know: shutter speed, aperture, ISO, battery life, burst mode and shots left. This is the digital version of the LED screen on the top of most DSLRs. It doesn’t draw as much juice as the screen on the back, and it grants easy access to that information for making adjustments.

Memory Card

I have no gripes over the single memory card slot. I have yet to fill up my 64GB XQD card on any given night. And believe me, I’ve shot for many hours!

Power

Battery life is solid. The Z 6 uses the same tried-and-true ENELb-15 battery that all the Nikon prosumer DSLRs use. Consequently, I can bring the same battery and dual charger for both my Z 6 and D750. The Z 6 draws more power because of the constant LCD/EVF use, but I have yet to need more than two full batteries on a given night.

High ISO

This camera is the current champ for high ISO. The Sony a7S II is close, but the big separator is that the Z 6 is a 24-megapixel camera and the a7S II is only a 12-megapixel. That’s double the megapixels, which provides finer detail and smoother tonal transitions. You are not going to make large prints with an image from the a7S II unless you are finessing a lot in post.

Negatives (Not the Film Kind)

On the flip side, I do have gripes with the Z 6—which is OK, because there is no perfect camera.

Lens Lack

First and foremost is this plea: Nikon, hurry up and make some more lenses!

My favorite Z lens right now is the 14-30mm f/4. I love the compactness and I really don’t miss the extra stop of an f/2.8 version because I can go to those higher ISOs without worry (more on that later). I did test the 14-30mm against the F-mount equivalent, the Nikon 14-24mm f/2.8, which is one of my all-time favorite lenses. The cost difference is minimal right now—the f/2.8 F lens is currently $1,895 and the f/4 Z is $1,295. I don’t see much loss in image quality with the latter, so I’m torn. A 14-24mm f/2.8 Z-mount is in the works, but I assume it will be over $2,000.

One might argue that I could just use any F-mount lens I want by employing the FTZ adapter. But I’m not a fan of this tool. When I mount a camera body to a tripod and want to take off the FTZ adapter and lens, the FTZ mount gets in the way. To remove the FTZ mount and lens, I have to take the camera completely off the tripod, then swap lenses. This is definitely annoying.

(I applaud Canon for what they did with their offering of four different adapters, including ones that have a built-in neutral density or circular polarizer filter. This is great especially when you want to adapt superwide-angle lenses—which don’t take screw-on filters—to a mirrorless camera.)

Non-Articulating Screen

I like cameras with articulating arm screens instead of just the tilting-up-or-down version found on most bodies, the Z 6 included. Yeah, I understand that is adding more “fragile” components, but the articulating LCD does a few things I love:

  • I can always flip my screen and protect it from scratches.

  • People want their cameras to emulate their phones. Let’s face it, phones did a great job of copying the best functions of cameras; time for camera companies to take it back!

  • I’m not a selfie guy but I do like taking self-portraits and putting my camera in low and different angels. The articulating angle arm gives more options.

The articulating arm screen that flips out (left) is much more functional than a screen that just tilts (right).

Lightroom Tinkering

Nikon hard-bakes some very aggressive noise reduction that gets automatically applied upon import to Lightroom. The amount of reduction depends on the ISO.  I definitely suggest taking a good look at this automated noise reduction and customizing it to taste. With Z 6 images, the default noise adjustments are as follows:

  • For ISO 6400 it applies 43 points of luminance, 75 points of detail, 10 points of color.

  • For ISO 12,800 it applies 46 points of luminance, 75 points of detail, 10 points of color.

  • For ISO 25,600 it applies 49 points of luminance, 75 points of detail, 10 points of color.

  • For ISO 51,200 it applies 52 points of luminance, 75 points of detail, 10 points of color.

This is a bit aggressive. I would definitely go in and cook that to taste. I’ve found that zeroing out the amount of luminance and color noise and then adding 10 to 30 points of each cleans up things nicely and retains the detail.

Z 6 Compared to the Others

So there you go—a feature-by-feature breakdown of why I love the Z 6 (despite the few things I would change about it). But why do I say it’s better for night photography than the other options out there?

There are lots of features we can compare, but the point here is about night photography, therefore the feature we care about most is performance in low light. So let’s take a close look at the high ISOs of the latest full-frame mirrorless cameras. (There haven’t been many DSLRs released in the last year, except Canon’s recent EOS 90D, which I haven’t been able to test yet. Besides, mirrorless is the future.)

Note: To see the full-resolution versions of the comparison images below, visit here to download.

Sony a7R III

Let me preface this by saying that it is really difficult for a high-megapixel camera (over 30 megapixels) to produce clean ISOs above 6400. Think about it. All the full-frame cameras have a fixed amount of space in which to fit millions of pixels—the more that you cram in, the smaller the pixels get, and their “well” to receive light also gets smaller. Algorithms continue to get better but the sweet spot for a full-frame night camera is 24 to 30 megapixels.

That being said, the a7R III performs really well. There is no doubt why this camera has been incredibly popular for Sony.

The full-frame views of all these shots look good, but when we zoom to 100 percent and pay attention to the granularity of the sky and shadow regions, that’s when we notice a difference.

  • 6400: Normal noise. Looks normal with no loss of detail in the brick and woodwork.

  • 12,800: Acceptable noise. We can definitely see grain in the sky as well as in the wood and brick. But a gentle use of noise reduction (say, 20 points) would make this an acceptable ISO to use in the field.

  • 25,600: Too much noise. This is where the a7R III breaks for me. It looks like we are shooting through a nylon stocking. There is noise from top to bottom. An aggressive amount of noise reduction (with a subsequent loss of detail) would be needed to make this work for me.

Canon EOS R

The EOS R has the same sensor as the Canon 5D Mark IV, which isn’t a bad thing, as that has been a popular night camera for Canon users.

  • 6400: Acceptable noise. But it looks like ISO 1600 or 3200 in the film days. Applying noise reduction by 10 to 15 points should clean that up just fine.

  • 12,800: Too much noise. While I was testing, a car drove by and lit up the scene, but we can still see a heavy layer of noise over the whole image. Finessing the noise and detail could salvage the photo, but this would really be my breaking point if I was a Canon user.

  • 25,600: Yeah, no. Lots of noise and grain here. I would need to be aggressive in removing it and thus lose a lot of detail. Best to not go this far.

Nikon Z 6

Here’s why it’s better than the rest.

  • 6400: Minimal noise. I’m impressed—it’s cleaner than any other camera I have tested at ISO 6400. I’d set noise reduction to 5 or 10 points, and then it looks almost like ISO 800.

  • 12,800: Normal noise. It looks like the competition’s ISO 6400. Not much loss of detail at all. I’d set luminance and color noise reduction between 10 and 20 to make it even cleaner.

  • 25,600: Acceptable noise. Definitely seeing the noise, but I can work with it. Setting the luminance and color noise to 20 or 30 points, the situation is remedied with minimal loss of detail. I would still try to slightly overexpose my image in this scenario, as opening up shadows in post-production would create more troublesome grain.

  • 51,200: Too much noise. This is my breaking point with the Z 6. We are getting that layer of grain over the entire image and losing detail. I can be aggressive with my noise reduction and might be able to work with an image, but chances of making it good enough for a large print are minimal.

Wrapping Up

For night photographers, creating great images at high ISOs is a must. I found the top three full-frame mirrorless cameras to be quite capable of ISO 6400, and I might even dip into 12,800.

The Z 6 separates itself by getting 1 to 2 stops better with cleaner ISOs. And that for me is a game-changing camera for night photography. It means I can pretty much shoot in any dark sky condition, even with an f/4 lens, and come away with excellent image quality.

Is it a perfect camera? No, but nothing is. Bedsides the excellent high ISOs, the other winning points are:

  • the comfort of the camera

  • familiar menu system

  • adapting to a lens ecosystem that I am happy with

I’m looking forward to more native Z-mount lenses coming in the near future and hopefully a new FTZ adapter that doesn’t get in the way of my tripod work. And above all, I’m looking forward to the Z 6 enabling me to seize the night better than I ever have before.

Have you tried the Z 6 at night yet? Are you happy with it? Let’s continue the conversation in the comments section below or on our Facebook page.

Gabriel Biderman is a partner and workshop leader with National Parks at Night. He is a Brooklyn-based fine art and travel photographer, and author of Night Photography: From Snapshots to Great Shots (Peachpit, 2014). During the daytime hours you'll often find Gabe at one of many photo events around the world working for B&H Photo’s road marketing team. See his portfolio and workshop lineup at www.ruinism.com.

UPCOMING WORKSHOPS FROM NATIONAL PARKS AT NIGHT

Nikon Night Photography Showdown: The D850 Compared to Its Cousins

As you may know, all five of us at National Parks at Night are primarily Nikon shooters. Between us we use the D750, D810, D3s, D4s and D5. Although we are generally happy with our current cameras, some of us are ready for an upgrade. As such, the announcement of the D850 a few months ago excited us as much as it did the rest of the photo world. This camera was touted to be a game-changer for every niche it caters to, including night photography. So it was natural that we’d want to field-test it as a nocturnal tool.

With its nearly 46-megapixel sensor and impressive list of specs and features, the D850 was a fitting camera for Nikon to release during its centennial year. Although it is a direct successor to the D810, the D850 seems to be more of a hybrid between the high-megapixel D810 and the high-speed D5. The new camera sports a Nikon-designed 45.7-megapixel FX-format BSI CMOS sensor aimed at landscape, studio and architectural photographers, but can shoot up to 9 frames per second and at least 51 continuous frames before the buffer fills for sports and wedding photographers. And the back-side illuminated sensor should improve low-light performance, which is obviously key for night photographers!

I recently had the opportunity to spend some time (not nearly enough) with the D850 and compare its performance to other high-end Nikon cameras, especially as it pertains to night photography. Despite the moon, UPS and the weather (clouds, cold and wind) all conspiring against me, I was able to spend a couple of nights with the D850, as well as make some comparison images with the D750, D810 and D5.

Lady Boot Arch from behind, Alabama Hills, Eastern Sierra, California. Lighting with a warm-gelled Coast HP5R flashlight from camera right, low and just in front, plus behind and to the right of the rock column. Single shot. It took about eight tries to get the lighting right. Nikon D850, Irix 11mm f/4 Blackstone lens. 15 seconds, f/5.6, ISO 3200.

There are many online reviews of the D850, but in this one I’ll focus entirely on how it performs and handles for night photography––in particular:

  • high ISO astro-landscape photography
  • native ISO long exposure night photography
  • high contrast artificial light night photography

I am assuming that the reader is at least minimally familiar with Nikon DSLRs, and that they will use other resources such as DPReview and DXOMark to evaluate the camera for other types of photography.

Features and User Experience

The camera is just slightly heavier than the D810, and is well-balanced and comfortable to hold. It weighs about half a pound more than the D750, and almost a full pound less than the D5.

The controls and buttons of the D850 are similar to the D810, except that the ISO and Mode buttons have switched positions in line with the D5. This is a nice improvement over other Nikon cameras like the D750 where the ISO button is on the back and to the left of the display.

The pop-up flash has been sacrificed in favor of better weather sealing and a larger optical viewfinder with .75 magnification and 100 percent frame coverage. Night photographers should appreciate both of these features more than a built-in flash. There is also a flip lever with a shutter to block light from entering through the viewfinder during long exposures.

The D850 has an articulated rear screen which operates in the same fashion as the D750 screen, except that it is higher resolution and touch-sensitive. The screen adjusts on only one axis and is useful primarily for low and high camera angles with the camera in the horizontal position. Previous Nikon touch screens were usable only in playback mode, but the D850’s touch screen is also active in live-view and menu navigation modes.

Like many of Nikon’s semi-pro and professional cameras, the D850 has two card slots, one for XQD and one for SD cards. Personally, I would prefer the choice of two of the same card slots, but the XQD card’s extreme write speed is required to take full advantage of the camera’s high frame rate and large buffer, as well as the massive amounts of data recorded by the high-resolution sensor during video recording.

One feature that is especially welcome to night photographers is the introduction of backlit buttons, which obviously ease the task of finding controls in the dark. Though, unlike with the D4s, D5 and D500, only the buttons on the left side of the D850 are illuminated.

As with the D750, there is a Time exposure setting, available in manual mode in between X250 and Bulb. The Time setting looks like two dashes (“- -”) in the Control Panel. Unlike the Time setting in the D750, which shuts off after 1,694 seconds if not ended sooner, the D850 shutter will remain open indefinitely.

Despite the few quibbles mentioned, the D850 is a joy to use. It’s highly customizable and very easy to get comfortable with.

Unfortunately, programmed shutter speeds do not extend past 30 seconds, which is also true of the available shutter speeds in the built-in intervalometer. Canon finally extended their shutter speed range with the 6D Mark II and 5D Mark IV, and hopefully Nikon will follow suit with their future models.

One of my biggest disappointments with past Nikon cameras has been the poor quality of the live view image in low light, which makes live-view focusing at night quite difficult. There is some improvement with the D850, and a new setting that allows the user to set different brightness levels for live view and image playback is helpful, as are the addition of live-view focus peaking and zebra stripes . (If you’re not familiar with the latter feature, know that it will make your life better. Check it out.)

Petroglyphs, Volcanic Tablelands, Bishop, California. Illuminated from the right with a warm-gelled Coast HP5R flashlight. Nikon D850. 15 seconds, f/9, ISO 6400.

The awkward Mode dial has been replaced with a much more user-friendly Mode button, with the unfortunate trade-off of losing the user-programmable custom modes for saving frequently used combinations of camera settings. I’m also not a fan of the outdated menu banks. Two other concerns:

  1. The SnapBridge Bluetooth app for transferring images to your smartphone, at least at first inception, was unreliable at best and is the only way to add GPS data to your files in-camera. (Nikon has told us that the recent update makes it usable, but I have not been able to test it.)
  2. Transferring files over Wi-Fi requires an attachment, of which the Nikon option is the $750 WT-7A Wireless Transmitter. (There are third-party options as well, which we will cover in the future.)

Despite the few quibbles mentioned, the D850 is a joy to use. It’s highly customizable and very easy to get comfortable with. I’m not sure that I’d want to hike the Pacific Crest Trail with it on my back, but in my limited experiences, it didn’t feel noticeably heavier in the field than my D750.

Imaging

Most previous Nikon DSLRs have used Sony engineered sensors, so the first thing to note with the D850 is that this is one of the few cameras that features a Nikon designed sensor. It’s a 45.7-megapixel FX-format BSI CMOS sensor. BSI stands for back-side illumination, a technology that has an atypical arrangement of the sensor components that allows more photons to reach the photodetectors, improving low-light performance, as well as readout rates, or the time required to digitize the light reaching the sensor.

What this means to us is that Nikon has produced an extremely high-resolution camera that does not sacrifice low-light performance. Night photographers can make very large high-quality prints from images made with a D850.

(An interesting side note is that Sony’s a7R II was the first FX camera to utilize a BSI sensor, and the replacement a7R III also utilizes BSI technology. This technology has been around for a while, but until recently was too expensive to implement in a reasonably priced FX camera.)

Mesquite Flat Sand Dunes, Death Valley National Park. The moon is low in the sky and the ambient exposure is intentionally underexposed for effect. For the middle-ground dunes, warmth, exposure and contrast were boosted using a local adjustment brush in Lightroom. An example of the malleability of files from this camera. Nikon D850, Nikon 24-120mm f/4 lens at 34mm, and Luxli Constructor LED light at 3200 K on the lowest setting, placed at the toe of the foreground dune. 30 seconds, f/10, ISO 800.

Like its predecessor, the D850 has a native ISO of 64, allowing for wider dynamic range than cameras with a native ISO of 100. The sensor also utilizes dual conversion gain, which has the effect of preserving highlight dynamic range while increasing sensitivity. In essence, the sensor has two different sensitivities: the native ISO of 64, and ISO 400, which is when the increased gain is activated.

Of course night photography is often done at high ISOs, which sacrifice dynamic range in favor of shorter exposure times. It has been suggested that underexposing at ISO 400 or 500 and then raising the exposure during RAW conversion will preserve more of the dynamic range than shooting at higher ISOs up to 4000. To me this indicates some degree of ISO invariance, (which is reinforced by my test images) although the article linked above claims that it is not.

Owens Valley Radio Observatory, California. This image was shot at the D850's native ISO of 64 to test the dynamic range of the sensor in a real-world situation. The scene was exposed for the maximum possible exposure without significant clipping of the brightest highlights, to determine if there would be adequate shadow detail while preserving highlight detail. Neither the camera’s histogram, blinking highlight indicator, nor zebra stripes indicated clipping, but highlight detail just exceeds the capability of an Adobe RGB display. Slightly less exposure would be preferable, especially considering that there is plenty of room on the left side of the histogram for compromise. Unfortunately, I was unable to do comparison shots with the other cameras at this location. In a nutshell: the dynamic range of this camera at native ISO is incredible. Nikon D850, Irix 15mm f/2.4 Blackstone lens. 30 seconds, f/3.2, ISO 64.

The focusing system in the D850 is the same as in the D5: a 153-point autofocus system featuring 99 cross-type points. Both the center focusing point and light meter are rated down to -4 EV. This is not enough to focus or meter by starlight, but it does offer a slight improvement over previous Nikon models like the D750 (-3 EV) and D810 (-2 EV).

As with the D810, the D850 has no optical low-pass or anti-aliasing filter, which makes for the sharpest possible images, but at a cost of an increased risk of moiré in highly detailed areas of a repeating pattern.

Image Quality

I was able to use the camera in different lighting conditions varying from full moon to starlight to some artificial lighting mixed with moonlight. When I had access to the camera, temperatures ranged between the low 20s and low 40s F, so long exposure noise was not a problem. (I’m eager to try the D850 during our Redwood National Park night photography workshop in late June to see how it performs during long exposures at summer temperatures.)

An example of ISO 25,600 in moonlight. Ken Lee at the Keane Wonder Mine, Death Valley National Park. Seeing detail in Ken's screen and in the folds of his black coat is astounding at this ISO. I would not make a large print of an photo shot at these settings, but the image quality is still very impressive. Nikon D850, Nikon 14-24mm f/2.8 lens at 24mm. 2 seconds, f/6.3, ISO 25,600.

Thirty-minute exposures at native ISO without enabling LENR were clean as a whistle. Native ISO 64 exposures yielded truly extraordinary image quality in both natural and artificial light, but higher ISO images were inconsistent. To be fair, I was not testing in a controlled environment, but with real-world variability that makes it more difficult to be scientific.


D850 test and Comparison Images

So you can make your own evaluations, we are providing you a selection of images made during the testing I did for this article. They are mostly DNG files with embedded metadata. Feel free to download the files and manipulate them for evaluative purposes. Please do not attempt to remove or edit the files in this folder, but rather download them onto your own computer first.

You can download everything mentioned below at npan.co/d850testimages. (Warning: It might take awhile, and we recommend not doing so with a mobile device using a cellular data connection. The files total about half a gigabyte.)

(All images are © 2018 Lance Keimig/NationalParksAtNight.com, and may not be printed or republished without express written consent of the author and National Parks at Night.)

 

ISO 6400 Comparison

6400.jpg

ISO 6400 Comparison

D750 v. D810 v. D850

These images were made sequentially on a very cold and windy night in Vermont just before moonrise. The clouds near the horizon are reflecting the lights of South Burlington or Williston, about 20 miles to the north. As the clouds were changing quickly during the shots, the value of comparing highlight clipping is somewhat limited. The foreground was lit by a handheld Luxli Constructor light, which was moved across the frame during the exposure, as the beam was not wide enough to light the entire scene. In hindsight, it would have been better to mount the light on a stand for consistency. The white lines in the road are puddles reflecting light from the sky.

 

Dynamic Range

Uhebe Crater Dynamic Range.jpg

Dynamic Range

D850

In this folder you will find a daytime image made at Ubehebe Crater in Death Valley National Park. The image was made shortly before sunset, during a windstorm that kicked up a tremendous amount of dust. It wasn’t the photo op I had hoped for, but still provided plenty of material to work with. There are three PNG files showing my Lightroom basic and local adjustments, and one showing clipping in the original file. I have included the DNG file, so you can make your own adjustments as well.

There is also the radio telescope image in DNG format to show the maximum dynamic range—what’s possible, and what isn’t.

 

Native Versus High ISO

hi-lo.jpg

Native v. High ISO

D750 v. D5 v. D850

There are two subfolders here, one showing native and +6-stop exposures in mixed artificial and moonlight shot with the D750 and D850. These are DNG files. The second folder shows native and +6-stop exposures in starlight with a little light pollution, comparing the D5 and D850 under these circumstances. Note that heavy clouds moved in during the 30-minute exposure on the D850, so it looks quite different than the 30-minute D5 image.

 

ISO Invariance

invariance.jpg

ISO Invariance

D5 v. D850

These two folders include a sequence of images shot with the D5 and D850 at full-stop ISOs from 100 to 6400 using the same aperture and shutter speed. The D850 folder also includes an ISO 64 image since that is the native ISO of the camera. For each stop of underexposure, the resulting image was given an additional stop of exposure in Lightroom, up to 5, the maximum available. For the ISO 64/100 exposures—which are six stops less than the 6400 exposures—five stops plus Highlights and Shadows were added to make the image look as good as possible. Only basic module adjustments were applied.

The conclusion is that the D5 is most definitely not invariant, and the D850 is. The D5 has a lower dynamic range at native ISO, and best results are achieved by giving correct exposure at whatever ISO you use, and not by raising exposure in post-processing. Conversely, the D850 has extremely wide dynamic range at native ISO 64, and also has a small bump in dynamic range at ISO 400 when the additional gain is applied to the sensor. Best results are achieved by shooting at ISO 64 when possible, or, for astro-landscape imaging for star points or Milky Way photography, I recommend shooting at ISO 400 and adding four stops of exposure in the RAW converter of your choosing.

For example, a typical astro-landscape photography exposure would be 20 seconds, f/2.8, ISO 6400. With the D850, I recommend using 20 seconds, f/2.8, ISO 400, and then boosting the exposure by four stops during RAW conversion. This will allow you to use the much wider dynamic range at the lower ISO without adding additional shot noise to the image. (Using ISOs lower than 400 and boosting the exposure in post by more than four stops will not yield better results.)

These are DNG files, so feel free to download and reset them to make your own adjustments from scratch.

 

Light Writing Comparison

light writing.jpg

Light Writing

D750 v. D810 v. D5 v. D850

These images, made on the Racetrack Playa in Death Valley, are the only ones I have comparing all four cameras. But due to the unique nature of each light-writing exposure––namely the angle of the light source and the speed it was moving—there are some intrinsic variations in highlights. Still, they’re fun files to review in order to get a general sense of the image qualities under these conditions (moonlight with a light source in the frame).


Which Nikon is Right for You?

In short, all of the cameras I tested have outstanding image quality, and make excellent choices for night photographers. The question readers should be asking themselves is, “Which camera is best for my needs?”


D750

The D750, despite being released more than 3 years ago, produces images that hold their own amongst its more expensive brethren. It is a superb value, currently priced at just under $1,800, and is a great step up from an APS-C camera. It would also be an excellent choice for a second body.

The compromise in choosing the D750 is primarily in user experience. Lacking a touch screen and the better live-view image quality of the newer cameras—as well as the comfort features of the D5 and D850 such as illuminated rear controls and an eyepiece shutter—don’t affect image quality so much as ease of use.

If you never print, or if you never display your images on anything larger than your computer display, you might be best off with a D750 and using the extra money to invest in some new Nikon glass to go with it.


D810

The D810 was released 3 1/2  years ago, and is currently priced around $2,800. Heralded as revolutionary at the time of its release, it is still a great camera, but a bit harder to recommend after the release of its successor. At roughly $500 less than the D850, I don’t think there’s enough of a savings to sacrifice all that the new camera adds to the party. Photographers who need the resolution of the D810’s 36-megapixel sensor but are on a restricted budget are those who might be attracted to the predecessor now. Look for price drops in the near future, or consider buying a used one as upgraders unload their “old” models.


D5

The D5 is truly a beast. Capable, durable, fast, accurate and relatively heavy. It’s not a camera for hikers, not even for long walks. Some famous photographer once said that if a subject wasn’t within 100 yards of the car, it wasn’t worth photographing. This camera is for that guy. Maybe it’s for you if you have a reliable assistant who never complains about schlepping your gear. Maybe it’s for you if you are strong and young and cost is not a primary consideration. For the journalist, sports or high-end wedding shooter who also does night photography, this is the camera. The D5 is worthy of its flagship status in every way. But not only is it significantly heavier than its more-than-worthy little siblings, it’s also significantly more costly: $6,500, body only.


D850

Now, the camera we really want to talk about: the D850. Released in October 2017, and priced at $3,300, there is still a backlog and a wait of one to two months to get your hands on one. Nikon Professional Services members do a little better, with an approximate wait time of two weeks as of January 2018.

As mentioned earlier in this post, the D850 takes some of the best features of both the D810 and the D5 and combines them into one camera. The D850 offers outstanding image quality, close to medium-format resolution and high-end features (many of which are extremely useful for night photographers)—all for roughly half the price of the D5.

It’s not perfect––native Wi-Fi and a useful smartphone controller, GPS, extended shutter speeds, custom exposure modes, and high ISO amplification that doesn’t push highlights into clipping would all be welcome improvements. Still, the combination of image quality, high resolution and features make the D850 one of the very best digital cameras ever made.

I recommend the D850 for professional and serious amateur night photographers who want to make large high-quality prints. And those who want to take advantage of the latest technologies in a camera with outstanding image quality without taking out a second mortgage should also put their names on the list.

What do you Think?

We welcome your thoughts and questions in the Comments section. (Please post all questions here for the benefit of other readers.)

Lance Keimig is a partner and workshop leader with National Parks at Night. He has been photographing at night for 30 years, and is the author of Night Photography and Light Painting: Finding Your Way in the Dark (Focal Press, 2015). Learn more about his images and workshops at www.thenightskye.com.

UPCOMING WORKSHOPS FROM NATIONAL PARKS AT NIGHT